A pump short cycling happens when the water pump continuously switches ON and OFF while pumping water. The obvious disadvantage of water pump short cycling is the irregular water flow and premature wear of the motor.
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The relative simplicity of design has made centrifugal pumps the most commonly available and widely used pump type in the market. Based on the number of impellers, centrifugal pumps can be classified into two categories - single-stage and multistage.
A booster pump is often recommended to increase water pressure to a desired level and improve its flow rate. They are also useful in applications where a single pump cannot deliver the desired service pressure and ensure that other pumps in the system do not cavitate. Let’s find out how booster pumps work and when to use these pumping devices.
Choosing a pump can be confusing if you are unaware of the different pump specifications and categorizations, specifically when it comes to ratings for different voltages (also known as dual voltage pumps).
There are a number of factors to consider before selecting the best type of pump for an application. Among these are the lift and head capabilities for the desired pump. Lift and head are both used to calculate or rate the movement of liquids vertically as opposed to the flow, that is, the quantity of liquid that a pump can move in a given amount of time. The volume of fluid moved over a given period of time, its maximum flow rate, is measured in gallons per minute, or simply, GPM. That number is not static, however. It is affected by the height that the fluid needs to be pumped. That, in turn, is determined by a pump’s head and lift.
Look to any industry, private or public, that relies on the transfer of fluids, and it’s more than likely that those fluids will be delivered by a centrifugal pump. They are the backbone of any water distribution or wastewater collection and management system, as well as applications as diverse as flood and fire protection, drainage, irrigation, boiler feeds, and much more. Knowing the correct size pump for an application requires knowing the answer to one fundamental question: what is a pump curve?
Spacing saving vertical pump system design reduces footprint in university’s mechanical room.
A major North American university needed a new science building to address the space requirements based on evolving educational needs. The new laboratory building was constructed to LEED (Leadership in Energy and Environmental Design) standards. An advanced mechanical room was required to ensure the building would operate sustainably and efficiently. The engineering firm faced the challenge of designing a multi-million-dollar system that would adjust to new requirements in terms of flexibility, while maintaining a small footprint. The system, consisting of six layers of piping and 16 pumps, required a specific sequence of installation, and had to meet specific seismic mounting and vibration requirements.
Mission Communications hosts free, informational webinars every Wednesday. Everyone interested in learning more about the fully pre-packaged, cost-effective, turnkey SCADA is encouraged to join.
These interactive webinars are designed for users to ask live questions about any monitoring or Mission subject they would like addressed. The focus of the webinars will vary week-to-week, with the general subject matter repeating on a month-to-month basis. Customers are welcome to ask questions about monitoring and Mission-related topics even if they are not covered by the topic of the week. When signing up for the webinar, GotoMeeting software will be automatically loaded to the desktop, laptop, or mobile device. Users can use the microphone and speakers of their device to listen to the audio and ask questions or dial into the toll-free number that is provided at the start of the event.
Motor design is key to the performance and service life of a pump. But people often struggle with determining the size of the motor required to drive the pump. This is especially true of wastewater submersible pumps.
Want to know how to improve your pump system performance? The U.S. Department of Energy’s Industrial Technologies Program (ITP) and the Hydraulic Institute (HI) have produced a guide called Improving Pumping System Performance: A Sourcebook for Industry. Their other guides include: compressed air systems, fan and blower systems, motors and drives, steam systems, and process heating systems.